Answer:
The area of rectangle is 
Step-by-step explanation:
we know that
The perimeter of a rectangle is equal to
we have
so
----> equation A
Remember that
The length of a rectangle is twice its width.
so
----> equation B
substitute equation B in equation A
solve for W
Find the value of L
<em>Find the area of rectangle</em>
substitute the values
Convert to mixed number
Speed = distance/time
Speed = 90 meters/45 seconds
Simplify the above answer
Speed = 2 meters/second
You can double-check this: You walk 2 meters per second, so multiply 2 by 45 (that is how many seconds), and you get 90.
Answer:
x=11 and the number of solutions is one solution
Step-by-step explanation:
The square root of 121 is 11. There are no other solutions, I believe.
Answer:
4 hours and 30 minutes.
Step-by-step explanation:
660 miles = 1 hour
1320 miles = 2 hours
1980 miles = 3 hours
2640 miles = 4 hours
There are only 330 miles left and that is half of 660mph so therefore it would only take half an hour for these last 330 miles.
So we know that it will be taking 4 hours, you would then add the 30 minutes which gives you 4 hours and 30 minutes.
Hope this helps!
